YOU SAID:

I want more coffee, but I've already had two cups today even though they haven't helped me at all.

INTO JAPANESE

もっとコーヒーが欲しいのですが、まったく役に立たなかったのに、今日はもう2杯飲んでいます。

BACK INTO ENGLISH

I want more coffee, but it didn't help at all, but I'm drinking two more cups today.

INTO JAPANESE

もっとコーヒーが欲しいのですが、まったく役に立ちませんでしたが、今日はあと2杯飲んでいます。

BACK INTO ENGLISH

I want more coffee, it didn't help at all, but I'm drinking two more cups today.

INTO JAPANESE

もっとコーヒーが欲しいのですが、まったく役に立ちませんでしたが、今日はさらに2杯飲んでいます。

BACK INTO ENGLISH

I want more coffee, it didn't help at all, but I'm drinking two more cups today.